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  • USACE awards Mill Creek Low Flow Project contract: construction to begin this summer

    WALLA WALLA, Wash. – On May 3, the U.S. Army Corps of Engineers, Walla Walla District awarded a $5.6 million construction contract to Advancia Remediation Services, LLC to improve habitat conditions for endangered salmonids in the Mill Creek channel.

  • Litigation stay agreement increasing Columbia River spill, begins

    After an agreement to stay the Columbia River Basin litigation for up to 10 years, federal water managers will begin spilling more water over basin dams this spring than in past years. In the agreement, the U.S. Army Corps of Engineers (USACE) has committed to spill more water over spillways instead of through turbines during its annual “spring spill” operations at dams on the lower Snake and Columbia rivers as well as expanding spill in the fall and early spring.

  • Scraping barnacles gives salmon a fighting chance

    Army Corps employees scrape barnacle buildup along the filling tunnels at the Hiram M. Chittenden Locks, Seattle, fulfilling a federal law requirement to help improve endangered salmon’s chances of survival, by reducing their potential for injury or death.

  • Corps assessing future of hydropower production in Willamette Valley

    In two virtual public information sessions, the Portland District, U.S. Army Corps of Engineers will discuss the role of hydropower at their Willamette Valley dams, and how they’re answering Congress’ call to look at the future of that hydropower.

  • Larger than life: A history of Dworshak Dam

    In May 1948, floodwaters on the Columbia River overtopped the cofferdam where construction was underway on McNary Lock and Dam. This flood, one of the largest on record, was one of many documented in the region since the mid-1880s. The propensity for flooding in the Northwest sparked much discussion about regional flood control.

  • Corps to begin deep drawdowns at Green Peter, Lookout Point

    Beginning in June, the Portland District, U.S. Army Corps of Engineers will begin to gradually drawdown Lookout Point and Green Peter reservoirs to historically low levels. The goal of these reservoir “drawdowns,” which are part of an injunction ordered by the U.S. District Court for the District of Oregon, is to increase juvenile spring Chinook and steelhead survival and passage through the reservoirs and past the dams.

  • Juvenile salmon benefit from spring spill

    In April, the Northwestern Division, U.S. Army Corps of Engineers started spilling water on the Snake and Columbia rivers to help juvenile salmon migrate downstream. We met up with Julie Ammann, Reservoir Control Center chief at Bonneville Lock & Dam to check it out.

  • Water managers begin spring spill to benefit juvenile salmon

    Federal water managers will begin spilling hundreds of thousands of gallons of water over spillways instead of through turbines during annual “spring spill” operations at U.S. Army Corps of Engineers’ dams on the lower Snake and Columbia rivers.

  • 43 fish die in Mud Mountain Dam fish passage facility

    Two physical barrier mishaps occurred at the new Mud Mountain Dam fish passage facility June 22 and June 26, which left 42 Chinook salmon and one bull trout dead.

  • 4 million mouths to feed

    Just below Dworshak Dam, on the shore of the Clearwater River, lies the Dworshak National Fish Hatchery (DNFH). The DNFH raises millions of salmon and steelhead smolts every year to be released into the river and make their way down to the ocean.